Marine Offshore Cables & Accessories – Lightweight Cables
âž¡ See also: Cable Glands | Hazardous Area Flameproof & Explosion Proof
| Helkama Cables Part Number | Instrumentation Cable Description | Cable Type |
| RFA-HF | Screened instrumentation and communication cable with SHF1 or SHF2 sheath – 250V |  |
| RFA-HF (i) | Collectively and pair screened instrumentation and communication cable with SHF1 or SHF2 sheath 250V |  |
| LKAM-HF | Screened control and instrumentation cable with SHF1 or SHF2 sheath 250V |  |
| LKAM-HF | Screened power and control cable with SHF1 or SHF2 sheath for fixed installation 0,6/1kV |  |
|  RFA-FRHF |  Fire-resistant screened instrumentation and communication cable with SHF1 or SHF2 sheath 250V FRHF |  |
|  RFA-FRHF(i) |  Fire-resistant collectively and pair screened instrumentation and communication cable with SHF1 or SHF2 sheath 250V FRHF |  |
| LKAM-FRHF | Fire-resistant screened power and control cable with SHF1 or SHF2 sheath 0,6/1kV FRHF |  |
Developing & Manufacturing Offshore & Marine Cables For Over 50 Years
THORNE & DERRICK are international distributors of LV, MV & HV Offshore & Marine Cable Installation, Jointing, Substation, Earthing & Electrical Equipment – we supply Joints, Glands, Cleats & Cable Accessories specified for use in harsh and hazardous areas to support the installation of marine and offshore lightweight cables.
Since 1985, T&D have established an international reputation based on SERVICE | INTEGRITY | TRUST.
DNV is a rigorous approval system for cable accessories including joints, glands and cleats – the DNV approval process assesses all of the evidence offered by the manufacturer and compares it to the requirements of the international standard, IEC61914. Once full compliance is proven DNV Type Approval is offered.
DNV Approved
Hydrocarbon Resistant | Zero Halogen & Fire Resistant
Hazardous Area Explosion Proof | Zero Halogen
Zero Halogen | Fire Resistant | Stainless Steel
Also âž¡ Cable Labels, Cable Ties, Cable Transits and Cold Shrink
Contact Thorne & Derrick for further information and customer service – extensive range of DNV Approved Marine & Offshore Cables & Cable Accessories available for delivery to UK and international projects.
LV MV HV – 3.3kV 6.6kV 11kV 33kV
T&D ⇒ CABLE ♦ JOINT ♦ TERMINATE ♦ CONNECT ♦ GLAND ♦ CLEAT ♦ CRIMP ♦ DUCT ♦ SEAL ♦ REPAIRÂ
T&D are Specialist Distributors to UK Distribution Network Operators (DNO’s), NERS Registered Service Providers, ICP’s and HV Jointing Contractors of an extensive range of LV, MV & HV Jointing, Earthing, Substation & Electrical Eqpt – this includes 11kV/33kV/66kV cable joints, terminations and connectors for both DNO and private network applications.
Specialists Distributors of Cable Sealing Systems from leading manufacturers including: Hauff Technik | Roxtec | CSD | Filoseal
Contact our UK Power Team for competitive quotations, fast delivery from stock and technical support or training on all LV-HV products.
Key Product Categories: Duct Seals | Cable Cleats | Cable Glands | Electrical Safety | Arc Flash Protection | Cable Jointing Tools | Cable Pulling | Earthing | Feeder Pillars | Cable Joints LV | Joints & Terminations MV HVÂ
Western Power Distribution deliver electricity to over 7.8 million customers over a 55,500 square kilometre service area – WPD are the UK DNO electricity distribution network operator for the Midlands, South West and Wales.
WPD network consists of 220,000km of LV-HV overhead lines and underground cables with over 185,000 substations operating at low, medium and high voltage. Electricity is conveyed countrywide via the National Grid at 275kV/400kV distribution voltages and transformed to 132kV for regional distribution at electricity substations known as Grid Supply Points.
Employing around 6,000 people as the network spans the width of the UK from Penzance on the tip of Cornwall all the way to Skegness on the North Sea.
Thorne & Derrick are Approved Vendors of Western Power Distribution Approved Materials List & Assessed Products to enable the cable jointing, termination, distribution and installation of LV, MV (11kV-33kV) & HV cables onto WPD cable network from manufacturers including:
| 3M | CATU Electrical |
| Pfisterer | Nexans Euromold |
| Prysmian | Ellis Patents |
| AN Wallis | Furse |
| Lucy Zodion & Electric | WT Henley |
| Sicame | Cembre |
| Polypipe | Emtelle |
| Tyco TE Connectivity | NKT |
| Roxtec | Alroc |
| Centriforce | MV HV Cables |
âž¡ Contact us to discuss your requirements for Western Power Distribution LV, MV & HV Cable Installation, Jointing, Termination, Substation & Electrical Equipment including the following LV-HV Product Categories – our internal WPD commodity code database is constantly updated with new Western Power Distribution products.
| Cables – LV Waveform 11kV 33kV Triplex | Link Boxes – Underground LV |
| LV Joints – Mains, Straight, Service & Pot End | Cut Outs – House Service & Street Lighting |
| HV Joints – Straight, Branch & Transition | Crimping & Cutting Tools – Cables & Lines |
| HV Terminations – Indoor & Outdoor | Distribution – Service Boards & Feeder Pillars |
| HV Terminations – Separable Connectors | Cable Duct – LV MV HV 11kV 33kV 132kV |
| HV Bushings  – 11kV 33kV | Duct Seals – Cable Seals & Transits |
| HV Surge Arresters – 11kV 33kV | Jointing Tools – 11kV 33kV 66kV 132kV |
| EHV Terminations – GIS 132kV Cables | Insulation – Heat Shrink & Cold Shrink |
| Earthing Materials  – Copper Tape | Cable Covers – Stokbord & Tapetile |
| Cable Cleats & Clamps – Single & Trefoil | Cable Lugs – Crimp & Mechanical |
Thorne & Derrick distribute DNO approved MV HV Cables including 11kV 33kV – this includes single and 3 core XLPE, EPR and Triplex cables plus suitable cable joints, cable cleats, terminations and connectors in heat shrink, cold shrink, cold applied and plug-in technology.
T&D supply Utilities & Approved Contractors with cable pulling products including cable rollers, cable socks and drum lifting jacks to enable the installation of low voltage and high voltage cables intro trench or duct: this includes single core, 3 core and Triplex 11kV/33kV power cables and LV waveform, mains and service cables.
HV Joints Terminations Connectors – 3M Pfisterer Nexans Euromold Elastimold
T&D are Specialist Distributors to the UK Distribution Network Operators (DNO’s), NERS Registered Service Providers, ICP’s and High Voltage Jointing Contractors of an extensive range of Cable Joints, Substation, Distribution, Tooling & Installation Equipment approved by the utilities:
JOINTÂ ♦ TERMINATEÂ ♦ CONNECTÂ ♦ GLANDÂ ♦ CLEATÂ ♦ CRIMPÂ ♦ DUCTÂ ♦ SEALÂ ♦ REPAIRÂ ♦ CABLE ♦ SPLICE ♦ INSULATE
UK Power Networks own and maintain LV-HV electricity cables and power lines across London, the South East and East of England – the area covers more than 29,000 square kilometres from The Wash in the East to the River Arun on the South Coast in the UK.
UKPNÂ maintain and upgrade medium and high voltage power equipment including cables, substations and transformers for the distribution of electricity from underground cables and overhead lines.
Thorne & Derrick are Approved Vendors of UK Power Networks Approved Materials List & Assessed Products to enable the cable jointing, termination, distribution and installation of LV, MV (11kV-33kV) & HV cables onto UKPN cable network from manufacturers including:
| 3M | CATU Electrical |
| Pfisterer | Nexans Euromold |
| Prysmian | Ellis Patents |
| AN Wallis | Furse |
| Lucy Zodion & Electric | WT Henley |
| Sicame | Cembre |
| Polypipe | Emtelle |
| Tyco TE Connectivity | NKT |
| Roxtec | Alroc |
| Centriforce | MV HV Cables |
âž¡ Contact us to discuss your requirements for UK Power Networks LV, MV & HV Cable Installation, Jointing, Termination, Substation & Electrical Equipment including the following LV-HV Product Categories – our internal UKPN commodity code database is constantly updated with new UK Power Networks products.
| Cables – LV Waveform 11kV 33kV Triplex | Link Boxes – Underground LV |
| LV Joints – Mains, Straight, Service & Pot End | Cut Outs – House Service & Street Lighting |
| HV Joints – Straight, Branch & Transition | Crimping & Cutting Tools – Cables & Lines |
| HV Terminations – Indoor & Outdoor | Distribution – Service Boards & Feeder Pillars |
| HV Terminations – Separable Connectors | Cable Duct – LV MV HV 11kV 33kV 132kV |
| HV Bushings  – 11kV 33kV | Duct Seals – Cable Seals & Transits |
| HV Surge Arresters – 11kV 33kV | Jointing Tools – 11kV 33kV 66kV 132kV |
| EHV Terminations – GIS 132kV Cables | Insulation – Heat Shrink & Cold Shrink |
| Earthing Materials  – Copper Tape | Cable Covers – Stokbord & Tapetile |
| Cable Cleats & Clamps – Single & Trefoil | Cable Lugs – Crimp & Mechanical |
Thorne & Derrick distribute DNO approved MV HV Cables including 11kV 33kV – this includes single and 3 core XLPE, EPR and Triplex cables plus suitable cable joints, cable cleats, terminations and connectors in heat shrink, cold shrink, cold applied and plug-in technology.
T&D supply Utilities & Approved Contractors with cable pulling products including cable rollers, cable socks and drum lifting jacks to enable the installation of low voltage and high voltage cables intro trench or duct: this includes single core, 3 core and Triplex 11kV/33kV power cables and LV waveform, mains and service cables.
HV Joints Terminations Connectors – 3M Pfisterer Nexans Euromold Elastimold
T&D are Specialist Distributors to the UK Distribution Network Operators (DNO’s), NERS Registered Service Providers, ICP’s and High Voltage Jointing Contractors of an extensive range of Cable Joints, Substation, Distribution, Tooling & Installation Equipment approved by the utilities:
JOINTÂ ♦ TERMINATEÂ ♦ CONNECTÂ ♦ GLANDÂ ♦ CLEATÂ ♦ CRIMPÂ ♦ DUCTÂ ♦ SEALÂ ♦ REPAIRÂ ♦ CABLE ♦ SPLICE ♦ INSULATE
Scottish & Southern Electricity Networks forms part of the FTSE-50 energy company, SSE with electricity distribution and transmission networks carrying electricity to over 3.7 million homes and businesses across the north of the Central Belt of Scotland and also Central Southern England.
SSE network consists of over 106,000 substations,130,000 km of overhead power lines and underground cables as well as over 100 subsea cables that power island communities.
Employing around 4,000 people working form 85 depots and offices answering over 1,500 calls daily.
In 2016 SSE gave 1 million to local community projects through the Resilient Communities Fund as well as helping 450,000 vulnerable customers identified on the Priority Services Register with 11,000 assisted during power outages last year
Thorne & Derrick are Approved Vendors of Scottish & Southern Electricity Networks Approved Materials List & Assessed Products to enable the cable jointing, termination, distribution and installation of LV, MV (11kV-33kV) & HV cables onto NPG cable network from manufacturers including:
| 3M | CATU Electrical |
| Pfisterer | Nexans Euromold |
| Prysmian | Ellis Patents |
| AN Wallis | Furse |
| Lucy Zodion & Electric | WT Henley |
| Sicame | Cembre |
| Polypipe | Emtelle |
| Tyco TE Connectivity | NKT |
| Roxtec | Alroc |
| Centriforce | MV HV Cables |
âž¡ Contact us to discuss your requirements for Scottish & Southern Electricity Networks LV, MV & HV Cable Installation, Jointing, Termination, Substation & Electrical Equipment including the following LV-HV Product Categories – our internal SSE commodity code database is constantly updated with new Scottish & Southern Electricity Networks products.
| Cables – LV Waveform 11kV 33kV Triplex | Link Boxes – Underground LV |
| LV Joints – Mains, Straight, Service & Pot End | Cut Outs – House Service & Street Lighting |
| HV Joints – Straight, Branch & Transition | Crimping & Cutting Tools – Cables & Lines |
| HV Terminations – Indoor & Outdoor | Distribution – Service Boards & Feeder Pillars |
| HV Terminations – Separable Connectors | Cable Duct – LV MV HV 11kV 33kV 132kV |
| HV Bushings  – 11kV 33kV | Duct Seals – Cable Seals & Transits |
| HV Surge Arresters – 11kV 33kV | Jointing Tools – 11kV 33kV 66kV 132kV |
| EHV Terminations – GIS 132kV Cables | Insulation – Heat Shrink & Cold Shrink |
| Earthing Materials  – Copper Tape | Cable Covers – Stokbord & Tapetile |
| Cable Cleats & Clamps – Single & Trefoil | Cable Lugs – Crimp & Mechanical |
Thorne & Derrick distribute DNO approved MV HV Cables including 11kV 33kV – this includes single and 3 core XLPE, EPR and Triplex cables plus suitable cable joints, cable cleats, terminations and connectors in heat shrink, cold shrink, cold applied and plug-in technology.
T&D supply Utilities & Approved Contractors with cable pulling products including cable rollers, cable socks and drum lifting jacks to enable the installation of low voltage and high voltage cables intro trench or duct: this includes single core, 3 core and Triplex 11kV/33kV power cables and LV waveform, mains and service cables.
HV Joints Terminations Connectors – 3M Pfisterer Nexans Euromold Elastimold
T&D are Specialist Distributors to the UK Distribution Network Operators (DNO’s), NERS Registered Service Providers, ICP’s and High Voltage Jointing Contractors of an extensive range of Cable Joints, Substation, Distribution, Tooling & Installation Equipment approved by the utilities:
JOINTÂ ♦ TERMINATEÂ ♦ CONNECTÂ ♦ GLANDÂ ♦ CLEATÂ ♦ CRIMPÂ ♦ DUCTÂ ♦ SEALÂ ♦ REPAIRÂ ♦ CABLE ♦ SPLICE ♦ INSULATE
SP Energy Networks is part of the Scottish Power Group of companies offering safe and reliable electricity supply to all customers including providing power to 1.5 million customers in Merseyside, Cheshire, North Wales and North Shropshire as well as 2 million in central and Southern Scotland.
SPEN have 30,000 substations (1 for every 100 customers), 40,000km overhead lines and 65,000km underground cables – operating in three of the UK’s largest cities (Liverpool, Glasgow & Edinburgh) accounting for 1.6m (43%) of our customers, as well as delivering LV-HV power to significant rural areas (North Wales, Scottish Borders and Dumfries & Galloway).
Employing around 2,600 people in 17 locations in the South of Scotland and 17 locations in England and Wales.
Scottish Power Energy Networks make electricity generated from power stations, windfarms and various other utilities and transport it through our vast transmission network by underground cables and overhead lines.
Thorne & Derrick are Approved Vendors of Scottish Power Energy Networks Approved Materials List & Assessed Products to enable the cable jointing, termination, distribution and installation of LV, MV (11kV-33kV) & HV cables onto SPEN cable network from manufacturers including:
| 3M | CATU Electrical |
| Pfisterer | Nexans Euromold |
| Prysmian | Ellis Patents |
| AN Wallis | Furse |
| Lucy Zodion & Electric | WT Henley |
| Sicame | Cembre |
| Polypipe | Emtelle |
| Tyco TE Connectivity | NKT |
| Roxtec | Alroc |
| Centriforce | MV HV Cables |
âž¡ Contact us to discuss your requirements for Scottish Power Energy Networks LV, MV & HV Cable Installation, Jointing, Termination, Substation & Electrical Equipment including the following LV-HV Product Categories – our internal SPEN commodity code database is constantly updated with new Scottish Power Energy Networks products.
| Cables – LV Waveform 11kV 33kV Triplex | Link Boxes – Underground LV |
| LV Joints – Mains, Straight, Service & Pot End | Cut Outs – House Service & Street Lighting |
| HV Joints – Straight, Branch & Transition | Crimping & Cutting Tools – Cables & Lines |
| HV Terminations – Indoor & Outdoor | Distribution – Service Boards & Feeder Pillars |
| HV Terminations – Separable Connectors | Cable Duct – LV MV HV 11kV 33kV 132kV |
| HV Bushings  – 11kV 33kV | Duct Seals – Cable Seals & Transits |
| HV Surge Arresters – 11kV 33kV | Jointing Tools – 11kV 33kV 66kV 132kV |
| EHV Terminations – GIS 132kV Cables | Insulation – Heat Shrink & Cold Shrink |
| Earthing Materials  – Copper Tape | Cable Covers – Stokbord & Tapetile |
| Cable Cleats & Clamps – Single & Trefoil | Cable Lugs – Crimp & Mechanical |
Thorne & Derrick distribute SPEN Approved cable joints, terminations and connectors for use on 33kV cable networks including pole terminations and indoor switchgear connectors for polymeric (XLPE) insulation single core cables.
| 33kV Outdoor Cable Terminations for XLPE 1-core cables | ||||||
| SAP Number | Description | SP Reference | Sicame | Additional Information | Approved Manufacturer | |
| 30980215 | 1 Core XLPE 150-240sqmm Cu or Alu Coldshrink Termination (pack of 3) | 33-033, 33-034 | MV33TE3/SP | Includes mechanical shear off lugs for phases & earths | Sicame | |
| 30980250 + 30032527 | 1 Core XLPE 400sqmm Alu Coldshrink Termination (pack of 3) | 33-035 | MV33TE4/SP | Without lugs | Sicame | |
| 30980250 + 30032529 | 1 Core XLPE 500-630sqmm Cu Coldshrink Termination (pack of 3) | 33-036 | MV33TE4/SP | Without lugs | Sicame | |
| 33kV “Inner Cone” Cable Connectors for XLPE 1-core cables | ||||||
| Description | SP Reference | Plug Size | Pfisterer | Lead Time | Additional Information | Approved Manufacturer |
| 1 Core XLPE 150sqmm Cu or Alu | 33-037 | Size 2 | 870 230 150 | 4-6 weeks | Set of 3 plugs per pack | Pfisterer |
| 1 Core XLPE 150sqmm Cu or Alu | 33-038 | Size 3 | 870 330 150 | 4-6 weeks | Set of 3 plugs per pack | Pfisterer |
| 1 Core XLPE 240sqmm Cu or Alu | 33-039 | Size 3 | 870 330 240 | 4-6 weeks | Set of 3 plugs per pack | Pfisterer |
| 1 Core XLPE 400sqmm Alu | N/A | Size 3 | 870 330 400 | 4-6 weeks | Set of 3 plugs per pack | Pfisterer |
| 1 Core XLPE 500sqmm Cu | 33-040 | Size 3 | 870 330 500 | 4-6 weeks | Set of 3 plugs per pack | Pfisterer |
| 1 Core XLPE 630sqmm Cu | 33-041 | Size 3 | 870 330 630 | 4-6 weeks | Set of 3 plugs per pack | Pfisterer |
| 33kV Transformer Separable Tee Connectors & Couplers for XLPE 1 Core Cables | ||||||
| SAP Number | Description | SP Reference | Nexans Euromold | Additional Information | Approved Manufacturer | |
| 30980233 | 1 Core XLPE 150sqmm Cu or Alu | 33-042 | 3XM400TB/G-150.240-45/SP | Three connectors per pack | Nexans Euromold | |
| 30027175 | 1 Core XLPE 240sqmm Cu or Alu | 33-043 | 3XM400TB/G-120.300-45/SP | Three connectors per pack | Nexans Euromold | |
| 30026496 | 1 Core XLPE 400sqmm Alu | N/A | 3XM400TB/G-400-45/SP | Three connectors per pack | Nexans Euromold | |
| 30025695 | 1 Core XLPE 500sqmm Cu | 33-044 | 3XM400TB/G-500-45/SP | Three connectors per pack | Nexans Euromold | |
| 30025696 | 1 Core XLPE 630sqmm Cu | 33-045 | 3XM400TB/G-630-45/SP | Three connectors per pack | Nexans Euromold | |
Thorne & Derrick distribute DNO approved MV HV Cables including 11kV 33kV – this includes single and 3 core XLPE, EPR and Triplex cables plus suitable cable joints, terminations and connectors in heat shrink, cold shrink, cold applied and plug-in technology.
T&D supply Utilities & Approved Contractors with cable pulling products including cable rollers, cable socks and drum lifting jacks to enable the installation of low voltage and high voltage cables intro trench or duct: this includes single core, 3 core and Triplex 11kV/33kV power cables and LV waveform, mains and service cables.
HV Joints Terminations Connectors – 3M Pfisterer Nexans Euromold Elastimold
T&D are Specialist Distributors to the UK Distribution Network Operators (DNO’s), NERS Registered Service Providers, ICP’s and High Voltage Jointing Contractors of an extensive range of Cable Joints, Substation, Distribution, Tooling & Installation Equipment approved by the utilities:
JOINTÂ ♦ TERMINATEÂ ♦ CONNECTÂ ♦ GLANDÂ ♦ CLEATÂ ♦ CRIMPÂ ♦ DUCTÂ ♦ SEALÂ ♦ REPAIRÂ ♦ CABLE ♦ SPLICE ♦ INSULATE
Published 02 Sep 2026
Celebrating Charlie & Ella’s Level 4 Sales Executive Apprenticeships At Thorne & Derrick International, we are proud to champion talent development and recognise the dedication required to achieve professional growth. We are therefore delighted to congratulate Charlie Baines and...
Published 11 Aug 2026
Thorne & Derrick will be Exhibiting at Solar & Storage Live UK 2026 at the NEC Birmingham from 22nd–24th September, showcasing our support for HV Cable Accessories, Joints, Terminations, Separable Connectors, Cable Tooling and Grid Connection Products used across...
